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CVE-2005-1513 is an integer overflow in qmail's stralloc_readyplus function affecting 64-bit platforms with substantial virtual memory. A sufficiently large SMTP message can reach qmail-local during local delivery and trigger an overflow in buffer-size arithmetic. The resulting reallocation creates a buffer smaller than the existing data, causing a buffer overflow during copying. A demonstrated exploit against Debian's default qmail installation uses a nearly 4 GB header to corrupt allocator metadata and libc dynamic symbol data, redirecting a subsequent function call to execute arbitrary shell commands. The vulnerability also permits denial of service.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An integer-overflow vulnerability in qmail's stralloc_readyplus function on 64-bit systems with substantial virtual memory. A remote attacker can submit a large SMTP request to cause denial of service and may be able to execute arbitrary code.
An integer overflow in qmail's stralloc_readyplus that Qualys says can be exploited remotely in a default installation to achieve remote code execution via qmail-local.
A mail program vulnerability where integer overflow leads to buffer overflow.
A mail program vulnerability where integer overflow leads to buffer overflow; the content notes exploitability became more practical over time.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.